These are recordings of ambient environmental sounds and room tones at York University Libraries in Toronto, Canada.

The first was made in the Steacie Science and Engineering Library on 28 August 2019.  It was closed, but sounds from outside came in through the wall.  The second was made in the Clara Thomas Archives and Special Collections vault on 21 October 2019.  No people were in the vault, so only the air circulation system can be heard.